peters



aroaizaabaaaaaam Beit known that I, .FRANKLI'lNl REALE, `of

" f delphia,1in the State of Pennsylvania, have invented anew and ImprovedMethod of PropellingVessels; and I"do hereby declare ljithatthe following is a full, clear, and exact description of the `construction and oper- `1 ation `of `the same, reference being hadto the annexed drawings, .making a `para of this i specification, in which-e" "Figure 1,]isalong`itudin`al elevation, Fig. 2, an endview, and Fig. 3, a vertical `view `in`part.f".` l

I modeof propelling vessels, is intended to ,1 imitate"` as closely; `as possiblethe natural l means employed by the porpoise, and other marine animals in moving in their element `j` those `forces and ,their `resolution that can bemade available through theagency of lthoseVmechanical means which are at our command s f ssimilated in form totheshestail, paddles "or propellers, marked A, A, in Figs. l,

" wand, are attached to an axis `or shaft i fmarkedB, capable `and so constructed as to fvibrate,`throughiany portion of a revolution less than 180 degreesgthe shaft "B, is ter- 1 minated `by arms, marked K, K, at right an-` a gies toit, upon whichtheipaddles A, A, are placed,` so constructed as `.to allow them to `change the';l angles which they present in their action `upon thewater, asindicated in `Figly, and tobe reversed, at the proper 1 time, `correspondent with and dependent vibrations and `angles i are` ifurther? assisted Iand controlled, byganother, and exterior shaft; made hollow `and surrounding that markedB,which is marked C, and so cons tructedastovibrate, likethe first described 180 degrees.` f1,

` The diiferen marked D,"D, `and 3, or byany other. means"` equivalent thereto. rior shaft `B, is intended to be put inmotion, and vibrated bya lever marked E, E, in` Figs.` l, and1 2,1 `connected by ap-itman or coupling m`arke`dwF,"fF, with a crank marked l Gr, Gr, in said ffiguresrSoin likemanner the l ESTATES PATENT OFFICE ERNKLIN PEALE, .or PHILDELPHIA, PENNSYLVANIA.

t" `the consolidated city land county of fPhilai The construction and operation of this `l andby taking advantage for this object o upon i the vibrations of `the Shaft B. These shaft, B,"through ,any portion of a revolu-` tion,` that be found effective, less than dA, attheir junction with the exterior shaftV C, is provided for by an `universal joint The inte-` 1 `sieeineatiorl gf Le'tersratent No. 12,446, dated 'February e7, 1855.

crank, marked J, J, in the said Figs. 1, and

"2; Thecranks J, and G, as above described ject, as stated in the rst paragraph of this specification.

, The main shaft L, I design to be moved by a pinion with gearing or teeth, or by a belt and pulley, or by the direct action of asteam engine, or engines, or the power of an engine may be applied separately to each exterior shaft C, intended to belvibrated by alever marked H, H, through a pitman or coupling marked I, I, puttin motion by a of the cranks J, and G. The cranks I del `a revolution of the axes orshafts B and C.

The cranks J ,.and G, may be made, and

I design so to construct them that they may be setor adjusted in any position in relation to each other, for it isby this means,

in part, that I design to change the angle of inclination of the paddles A to the line of progression, as exemplified by the dotted lines, marked by degrees, thus 5, 10, `15" inf Fig. 3, and also to adjust the time, at

which these changes shall be made,-but I design also, to change these angles, and time' of these "changes, by the adjustment of the `cranks and Llevers, `heretofore described, in a suitable manner. j

f. j By'the connection of the shaft C, with the paddles A, and also by the construction of `the arms K, K, and their connection with the shaftrB, theY paddles may be vibrated, `as hasbeen before stated through any portionfof a half revolution, the paddles A, be. ing forced to assume an angular position,

orobliqueftothe line of progression, `or mo- Having thus described my improved propeller, What I claim as my invention and desire to secure by Letters Patent is- The arrangement of the paddles A, the the arms K, and the shafts B, and C, arranged and operating, in the manner and for the purpose substantially as herein before described.

FRANKLIN PEALE.

Witnesses:

O. S. HUBBELL, SAM. SMITH. 

